CN110181094A - A kind of small hole processing method on phosphorus content≤0.6% steel - Google Patents
A kind of small hole processing method on phosphorus content≤0.6% steel Download PDFInfo
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- CN110181094A CN110181094A CN201910468984.9A CN201910468984A CN110181094A CN 110181094 A CN110181094 A CN 110181094A CN 201910468984 A CN201910468984 A CN 201910468984A CN 110181094 A CN110181094 A CN 110181094A
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- small hole
- phosphorus content
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/14—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for very small holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
Abstract
The invention discloses the small hole processing methods on a kind of phosphorus content≤0.6% steel, the small hole processing method is using steel institute's shaping workpiece of phosphorus content≤0.6% as processed object, and the technological measure that the small hole processing method is taken is :-using five-axle linkage high-speed machining center as machining tool；Positioning surface is milled out using the surface of the first design osseotomy site on workpiece of carbide key way mill；Hard alloy microbit is used to process the pass for meeting design requirement in a manner of brill to peck at a high speed on the positioning surface of workpiece again, the high speed, which pecks to bore in process, is equipped with high-pressure coolant.The invention enables the small hole processing on phosphorus content≤0.6% steel (especially stainless steel), not only efficiency is improved, the process-cycle substantially shortens, and machining yield and machining accuracy increase, the small hole processed can effectively be satisfied with the technical requirements of use environment, while processing cost is effectively reduced.
Description
Technical field
The present invention relates to the small hole processing method on steel, specifically a kind of phosphorus content≤0.6% steel (such as not
Become rusty steel, medium carbon steel or mild steel etc.) on small hole (the especially small hole of normal direction or rake angle) processing method.
Background technique
In the component part of accurate industrial equipment (such as air equipment etc.), the steel of phosphorus content≤0.6%, particularly
Stainless steel is widely applied.
The component part of accurate industrial equipment, some need carry out on it normal direction or rake angle small hole (in general,
The hole that diameter is 0.3~1mm is classified as Small Holes；The hole diameter≤0.3mm is classified as micropore；5≤L/D of relationship will be met
≤ 20 hole is general deep hole；It is medium deep hole by the hole for meeting relational expression 20≤L/D≤30；30≤L/D of relational expression will be met
≤ 100 be superdeep holes；In formula, L is the depth of pass, the diameter that D is pass) processing, can just be satisfied with its use in this way
The molding part of steel institute of technical requirements (such as oilhole etc.), phosphorus content≤0.6% is also in this way, referring to Fig. 1 or Fig. 2
It is shown.
Now by taking the molding precision component of stainless steel institute as an example, to present in normal direction or the processing of rake angle small hole thereon
The technical issues of make an explanation.
For a long time, the normal direction on the formed precision component of stainless steel or the processing of rake angle small hole are mainly by following
Mode is processed.First, cooperating general-purpose machining center to be processed by core of Special drilling jig, this meeting is so that different model part method
To or the processing of rake angle small hole need to make corresponding drill jig, the process-cycle is long, processing efficiency is not high and higher cost；
In addition, general-purpose machining center is not because itself spindle revolutions is high, (generally up to revolution is 8000~10000r/min), small
Enough processing linear velocities can not be provided in deep hole drilling processing, are easy to cause micro-bit to fracture, while cooling system pressure
Deficiency can not provide good heat dissipation and chip removal environment, also increase the risk that microbit fractures, and then cause yield rate low
Under, it further will increase processing cost.Second, being added with special processes such as laser processing, plasma beam processing, electric machining
Work, though it is high in machining efficiency, also be not present broken drill the technical issues of, these special process methods are processed because of its
The particularity of journey, and make the hole section of processed pass that irregular technical problem be presented, technology acuracy is difficult to meet
In the technical requirements of precision component.
In conclusion for the small depth of precision on steel (especially stainless steel) institute forming part of phosphorus content≤0.6%
The processing particularity in hole (the especially small hole of normal direction or rake angle) and the deficiency of existing processing technology, it is necessary to research and develop one
Kind machining accuracy, machining yield and processing efficiency height and the processing method that can effectively control processing cost.
Summary of the invention
Technical purpose of the invention is: for the small depth on above-mentioned phosphorus content≤0.6% steel (especially stainless steel)
The deficiency of hole machined particularity and existing processing technology, provide a kind of machining accuracy, machining yield and processing efficiency it is high and
The processing method that processing cost can be effectively controlled.
Technical purpose of the invention is realized by following technical proposals, micro- on a kind of phosphorus content≤0.6% steel
Small-Deep Hole Machining method, the small hole processing method be using steel institute's shaping workpiece of phosphorus content≤0.6% as be processed
Object, the technological measure that the small hole processing method is taken is:
Using five-axle linkage high-speed machining center as machining tool；
Positioning surface is milled out using the surface of the first design osseotomy site on workpiece of carbide key way mill；
Hard alloy microbit is used to meet design requirement to peck to process in a manner of brill at a high speed on the positioning surface of workpiece again
Pass, the high speed, which pecks to bore in process, is equipped with high-pressure coolant.
One of preferably, the carbide key way mill or the hard alloy microbit use pyrocondensation knife
Handle clamping is on the main shaft of the five-axle linkage high-speed machining center.Further, the clamping rotating accuracy of the heat-shrinkable knife handle
Error≤0.003mm.
One of preferably, the whole rotating accuracy error < 0.01mm of the hard alloy microbit.
One of preferably, the processing diameter of the carbide key way mill and the hard alloy microbit
Identical, the clamping shank of the carbide key way mill and/or the hard alloy microbit is conical surface staight shank structure.
One of preferably, the five-axle linkage high-speed machining center has following running parameter:
Main shaft energy long-term stable operation is in 15000~35000r/min；
Radial and axial runout error≤the 0.002mm of main shaft；
Each axis position error≤0.005mm；
Coolant pressure >=60kg of cooling system.
One of preferably, the carbide key way mill is not less than hard in the positioning surface that workpiece surface mills out
The facet of the drilling head diameter 2/3 of matter alloy microbit.
One of preferably, it is as follows that the high speed pecks the machined parameters for boring and processing:
Cutting speed is 18.85~23.56m/min；
Pecking drilling depth every time is 0.03~0.05mm；
Feed engagement is 2.5~3 μm；
Retracting to the speed of security plane is 3000~5000mm/min；
The speed for being back to previous processing plane is 3000~5000mm/min；
Time out is 2~3 seconds.
One of preferably, the workpiece is stainless steel work-piece, medium carbon steel workpiece or low-carbon steel workpiece.
One of preferably, diameter≤0.3mm of the pass；The hole depth of the pass meets following relational expression:
5≤L/D≤30；
In formula, L is the depth of pass；
D is the diameter of pass.
The method have the benefit that:
1. the present invention using high performance five-axle linkage high-speed machining center as machining tool, utilizes its workbench or main shaft
Space Rotating positioning function is realized in the case where no Special drilling jig to the accurate fixed of the design osseotomy site on workpiece
Position；The surface of design osseotomy site of the carbide key way mill on workpiece is recycled to mill out positioning surface, to prevent miniature drill
Head does not shift when pulling out of hole；Finally using High-speed machining underloading, efficient processing characteristic, what is provided with high pressure cooling system
Under the conditions of good heat dissipation and chip removal, pecks brill at a high speed on the positioning surface of workpiece using hard alloy microbit and process and meet
The pass of design requirement；The comprehensive function of these technical measures of the invention makes phosphorus content≤0.6% steel (especially stainless
Steel) on small hole (the especially small hole of normal direction or rake angle, deep hole of the invention is primarily referred to as general deep hole certainly
With medium deep hole) it is high in machining efficiency, the process-cycle is short, and machining yield and machining accuracy are high, the deep hole processed
It can satisfy the technical requirements of part use environment, so that processing cost is effectively controlled；
2. carbide key way mill or hard alloy microbit are used heat-shrinkable knife handle clamping in process by the present invention
On the main shaft of five-axle linkage high-speed machining center, excellent clamping precision and dynamic balance can be realized, to reduce cutter
The vibration generated in process guarantees that microbit has good rigidity in process and moves flat to greatest extent
Weighing apparatus property makes its uniform stressed, the risk that fractures is reduced, so that carbide key way mill or hard alloy microbit are in master
Clamping reliable performance on axis, it is advantageously ensured that the small hole on workpiece is with efficient, high-precision machine-shaping；
3. the processing diametric fit relationship of carbide key way mill and hard alloy microbit of the invention, is conducive to protect
Hinder the processing quality of the small hole on workpiece；The grip shank of carbide key way mill or hard alloy microbit of the present invention
Portion's structure, is conducive to easy to setup, can also effectively improve clamping precision and stability；The hard alloy that the present invention uses is miniature
The control of the whole rotating accuracy error of drill bit, it is advantageously ensured that microbit uniform force in process, is not easily broken, together
When guarantee small hole machining accuracy；
4. running parameter requirement of the present invention to five-axle linkage high-speed machining center, can effectively ensure lathe on workpiece
Small hole realizes efficient, high-precision reliable processing, is also advantageously implemented good heat dissipation and chip removal effect；
5. requirement of the present invention to corresponding relationship between the positioning surface on workpiece and hard alloy microbit, is conducive to ensure
The processing quality of small hole on workpiece；
6. the present invention bores the requirement of the machined parameters of process to pecking at a high speed, microbit can be ensured in high speed, light load
Pass machining is completed with greater efficiency under state, microbit is reduced and causes due to heat dissipation and chip removal situation are poor and load is laid particular stress on
The situation that fractures.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of workpiece according to the present invention, in the figure it can be seen that hole of small hole structure
Type 2 is provided on the normal plane of workpiece 1.
Fig. 2 is the structural schematic diagram of another workpiece according to the present invention, it can be seen that small hole structure in figure
Pass 2 is provided on the flat face of workpiece 1 with rake angle.
Specific embodiment
The present invention relates to the small hole processing method on steel, specifically a kind of phosphorus content≤0.6% steel (such as not
Become rusty steel, medium carbon steel or mild steel etc.) on small hole processing method, below with multiple embodiments to agent technology of the invention
Content is described in detail.
Embodiment 1
The present invention is using part made by the stainless steel of phosphorus content≤0.6% (such as 304 stainless steels) as processed work
Part, designed pass is the small hole structure of normal direction on workpiece, and the diameter of the pass is about 0.3mm, hole depth is about 5mm,
The ratio between hole depth and aperture are about 17, belong to typical deep-hole structures.Designed pass may refer to Fig. 1 institute on workpiece and workpiece
Show, it should be strongly noted that the pass on workpiece and workpiece that the present invention can adapt to is not limited to the example in Fig. 1.
Process of the invention is taken following main technological measure and is realized:
Measure 1. is utilized using the five-axle linkage high-speed machining center that high-performance, high speed motion, underloading are cut as process equipment
The Space Rotating positioning function of its workbench or main shaft realizes the accurate positionin of normal direction hole location in the case where being not necessarily to special fixture；
The five-axle linkage high-speed machining center should have following running parameter:
Main shaft energy long-term stable operation is in 15000~35000r/min；
Radial and axial runout error≤the 0.002mm of main shaft；
Each axis position error≤0.005mm；
Coolant pressure >=60kg of cooling system；
Measure 2. is using corresponding to the carbide key way mill formed a groove, the clamping shank of the carbide key way mill
For the rigid preferable and convenient conical surface staight shank structure of aid；
By carbide key way mill using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.002mm；
Positioning surface is milled out using the surface of the first design osseotomy site on workpiece of carbide key way mill, it is desirable that the positioning surface
For not less than hard alloy microbit drilling head diameter 2/3 facet, with ensure hard alloy microbit pull out of hole
Shi Kongwei does not shift；
Measure 3. is using corresponding to the hard alloy microbit formed a groove, the processing diameter of the hard alloy microbit
It is identical as the processing diameter of carbide key way mill, and the clamping shank of hard alloy microbit is rigidity preferably and accommodates
Convenient conical surface staight shank structure, the whole rotating accuracy error of hard alloy microbit is about 0.008mm；
By hard alloy microbit using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.002mm；
Using the high speed of five-axle linkage high-speed machining center, underloading processing characteristic, using hard alloy microbit again in workpiece
Positioning surface on to peck at a high speed to bore processing method and process meet the pass of design requirement, it is desirable that pecking the process for boring processing at a high speed
In be equipped with high-pressure coolant, with realize it is good heat dissipation and chip removal effect；
It is as follows that above-mentioned high speed pecks the machined parameters for boring and processing:
Cutting speed is about 20.56m/min；
Pecking drilling depth every time is about 0.04mm；
Feed engagement is about 2.6 μm；
The speed of rollback to security plane is about 3800mm/min；
The speed for being back to previous processing plane is about 3800mm/min；
Time out is about 2 seconds.
Embodiment 2
The present invention is part made by the medium carbon steel using phosphorus content≤0.6% as processed workpiece, designed on workpiece
Pass is the small hole structure of normal direction, and the diameter of the pass is about 0.25mm, hole depth is about 2mm, and the ratio between hole depth and aperture are about
It is 8, belongs to typical deep-hole structures.
Process of the invention is taken following main technological measure and is realized:
Measure 1. is utilized using the five-axle linkage high-speed machining center that high-performance, high speed motion, underloading are cut as process equipment
The Space Rotating positioning function of its workbench or main shaft realizes the accurate positionin of normal direction hole location in the case where being not necessarily to special fixture；
The five-axle linkage high-speed machining center should have following running parameter:
Main shaft energy long-term stable operation is in 15000~35000r/min；
Radial and axial runout error≤the 0.002mm of main shaft；
Each axis position error≤0.005mm；
Coolant pressure >=60kg of cooling system；
Measure 2. is using corresponding to the carbide key way mill formed a groove, the clamping shank of the carbide key way mill
For the rigid preferable and convenient conical surface staight shank structure of aid；
By carbide key way mill using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.003mm；
Positioning surface is milled out using the surface of the first design osseotomy site on workpiece of carbide key way mill, it is desirable that the positioning surface
For not less than hard alloy microbit drilling head diameter 2/3 facet, with ensure hard alloy microbit pull out of hole
Shi Kongwei does not shift；
Measure 3. is using corresponding to the hard alloy microbit formed a groove, the processing diameter of the hard alloy microbit
It is identical as the processing diameter of carbide key way mill, and the clamping shank of hard alloy microbit is rigidity preferably and accommodates
Convenient conical surface staight shank structure, the whole rotating accuracy error of hard alloy microbit is about 0.009mm；
By hard alloy microbit using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.003mm；
Using the high speed of five-axle linkage high-speed machining center, underloading processing characteristic, using hard alloy microbit again in workpiece
Positioning surface on to peck at a high speed to bore processing method and process meet the pass of design requirement, it is desirable that pecking the process for boring processing at a high speed
In be equipped with high-pressure coolant, with realize it is good heat dissipation and chip removal effect；
It is as follows that above-mentioned high speed pecks the machined parameters for boring and processing:
Cutting speed is about 19.35m/min；
Pecking drilling depth every time is about 0.03mm；
Feed engagement is about 2.7 μm；
The speed of rollback to security plane is about 4300mm/min；
The speed for being back to previous processing plane is about 4300mm/min；
Time out is about 3 seconds.
Embodiment 3
The present invention is part made by the mild steel using phosphorus content≤0.6% as processed workpiece, designed on workpiece
Pass is the small hole structure of normal direction, and the diameter of the pass is about 0.3mm, hole depth is about 4.5mm, and the ratio between hole depth and aperture are about
It is 15, belongs to typical deep-hole structures.
Process of the invention is taken following main technological measure and is realized:
Measure 1. is utilized using the five-axle linkage high-speed machining center that high-performance, high speed motion, underloading are cut as process equipment
The Space Rotating positioning function of its workbench or main shaft realizes the accurate positionin of normal direction hole location in the case where being not necessarily to special fixture；
The five-axle linkage high-speed machining center should have following running parameter:
Main shaft energy long-term stable operation is in 15000~35000r/min；
Radial and axial runout error≤the 0.002mm of main shaft；
Each axis position error≤0.005mm；
Coolant pressure >=60kg of cooling system；
Measure 2. is using corresponding to the carbide key way mill formed a groove, the clamping shank of the carbide key way mill
For the rigid preferable and convenient conical surface staight shank structure of aid；
By carbide key way mill using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.001mm；
Positioning surface is milled out using the surface of the first design osseotomy site on workpiece of carbide key way mill, it is desirable that the positioning surface
For not less than hard alloy microbit drilling head diameter 2/3 facet, with ensure hard alloy microbit pull out of hole
Shi Kongwei does not shift；
Measure 3. is using corresponding to the hard alloy microbit formed a groove, the processing diameter of the hard alloy microbit
It is identical as the processing diameter of carbide key way mill, and the clamping shank of hard alloy microbit is rigidity preferably and accommodates
Convenient conical surface staight shank structure, the whole rotating accuracy error of hard alloy microbit is about 0.007mm；
By hard alloy microbit using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.001mm；
Using the high speed of five-axle linkage high-speed machining center, underloading processing characteristic, using hard alloy microbit again in workpiece
Positioning surface on to peck at a high speed to bore processing method and process meet the pass of design requirement, it is desirable that pecking the process for boring processing at a high speed
In be equipped with high-pressure coolant, with realize it is good heat dissipation and chip removal effect；
It is as follows that above-mentioned high speed pecks the machined parameters for boring and processing:
Cutting speed is about 18.85m/min；
Pecking drilling depth every time is about 0.03mm；
Feed engagement is about 2.5 μm；
The speed of rollback to security plane is about 3100mm/min；
The speed for being back to previous processing plane is about 3100mm/min；
Time out is about 2.5 seconds.
Embodiment 4
The present invention is part made by the stainless steel using phosphorus content≤0.6% as processed workpiece, designed on workpiece
Pass is the small hole structure of rake angle, and the diameter of the pass is about 0.25mm, hole depth is about 3mm, the ratio between hole depth and aperture
About 12, belong to typical deep-hole structures.
Process of the invention is taken following main technological measure and is realized:
Measure 1. is utilized using the five-axle linkage high-speed machining center that high-performance, high speed motion, underloading are cut as process equipment
The Space Rotating positioning function of its workbench or main shaft realizes the accurate positionin of normal direction hole location in the case where being not necessarily to special fixture；
The five-axle linkage high-speed machining center should have following running parameter:
Main shaft energy long-term stable operation is in 15000~35000r/min；
Radial and axial runout error≤the 0.002mm of main shaft；
Each axis position error≤0.005mm；
Coolant pressure >=60kg of cooling system；
Measure 2. is using corresponding to the carbide key way mill formed a groove, the clamping shank of the carbide key way mill
For the rigid preferable and convenient conical surface staight shank structure of aid；
By carbide key way mill using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.003mm；
Positioning surface is milled out using the surface of the first design osseotomy site on workpiece of carbide key way mill, it is desirable that the positioning surface
For not less than hard alloy microbit drilling head diameter 2/3 facet, with ensure hard alloy microbit pull out of hole
Shi Kongwei does not shift；
Measure 3. is using corresponding to the hard alloy microbit formed a groove, the processing diameter of the hard alloy microbit
It is identical as the processing diameter of carbide key way mill, and the clamping shank of hard alloy microbit is rigidity preferably and accommodates
Convenient conical surface staight shank structure, the whole rotating accuracy error of hard alloy microbit is about 0.008mm；
By hard alloy microbit using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.003mm；
Using the high speed of five-axle linkage high-speed machining center, underloading processing characteristic, using hard alloy microbit again in workpiece
Positioning surface on to peck at a high speed to bore processing method and process meet the pass of design requirement, it is desirable that pecking the process for boring processing at a high speed
In be equipped with high-pressure coolant, with realize it is good heat dissipation and chip removal effect；
It is as follows that above-mentioned high speed pecks the machined parameters for boring and processing:
Cutting speed is about 21.38m/min；
Pecking drilling depth every time is about 0.05mm；
Feed engagement is about 2.8 μm；
The speed of rollback to security plane is about 5000mm/min；
The speed for being back to previous processing plane is about 5000mm/min；
Time out is about 3 seconds.
Embodiment 5
The present invention is part made by the stainless steel using phosphorus content≤0.6% as processed workpiece, designed on workpiece
Pass is the small hole structure of normal direction, and the diameter of the pass is about 0.3mm, hole depth is about 3.2mm, and the ratio between hole depth and aperture are about
It is 10, belongs to typical deep-hole structures.
Process of the invention is taken following main technological measure and is realized:
Measure 1. is utilized using the five-axle linkage high-speed machining center that high-performance, high speed motion, underloading are cut as process equipment
The Space Rotating positioning function of its workbench or main shaft realizes the accurate positionin of normal direction hole location in the case where being not necessarily to special fixture；
The five-axle linkage high-speed machining center should have following running parameter:
Main shaft energy long-term stable operation is in 15000~35000r/min；
Radial and axial runout error≤the 0.002mm of main shaft；
Each axis position error≤0.005mm；
Coolant pressure >=60kg of cooling system；
Measure 2. is using corresponding to the carbide key way mill formed a groove, the clamping shank of the carbide key way mill
For the rigid preferable and convenient conical surface staight shank structure of aid；
By carbide key way mill using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.002mm；
Positioning surface is milled out using the surface of the first design osseotomy site on workpiece of carbide key way mill, it is desirable that the positioning surface
For not less than hard alloy microbit drilling head diameter 2/3 facet, with ensure hard alloy microbit pull out of hole
Shi Kongwei does not shift；
Measure 3. is using corresponding to the hard alloy microbit formed a groove, the processing diameter of the hard alloy microbit
It is identical as the processing diameter of carbide key way mill, and the clamping shank of hard alloy microbit is rigidity preferably and accommodates
Convenient conical surface staight shank structure, the whole rotating accuracy error of hard alloy microbit is about 0.009mm；
By hard alloy microbit using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.002mm；
Using the high speed of five-axle linkage high-speed machining center, underloading processing characteristic, using hard alloy microbit again in workpiece
Positioning surface on to peck at a high speed to bore processing method and process meet the pass of design requirement, it is desirable that pecking the process for boring processing at a high speed
In be equipped with high-pressure coolant, with realize it is good heat dissipation and chip removal effect；
It is as follows that above-mentioned high speed pecks the machined parameters for boring and processing:
Cutting speed is about 23.56m/min；
Pecking drilling depth every time is about 0.04mm；
Feed engagement is about 3 μm；
The speed of rollback to security plane is about 4600mm/min；
The speed for being back to previous processing plane is about 4600mm/min；
Time out is about 3 seconds.
Embodiment 6
The present invention is part made by the stainless steel using phosphorus content≤0.6% as processed workpiece, designed on workpiece
Pass is the small hole structure of rake angle, and the diameter of the pass is about 0.3mm, hole depth is about 5mm, and the ratio between hole depth and aperture are about
It is 17, belongs to typical deep-hole structures.Designed pass may refer to shown in Fig. 2 on workpiece and workpiece, need to illustrate
, the pass on the present invention workpiece and workpiece that can adapt to is not limited to the example in Fig. 2.
Process of the invention is taken following main technological measure and is realized:
Measure 1. is utilized using the five-axle linkage high-speed machining center that high-performance, high speed motion, underloading are cut as process equipment
The Space Rotating positioning function of its workbench or main shaft realizes the accurate positionin of normal direction hole location in the case where being not necessarily to special fixture；
The five-axle linkage high-speed machining center should have following running parameter:
Main shaft energy long-term stable operation is in 15000~35000r/min；
Radial and axial runout error≤the 0.002mm of main shaft；
Each axis position error≤0.005mm；
Coolant pressure >=60kg of cooling system；
Measure 2. is using corresponding to the carbide key way mill formed a groove, the clamping shank of the carbide key way mill
For the rigid preferable and convenient conical surface staight shank structure of aid；
By carbide key way mill using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.003mm；
Positioning surface is milled out using the surface of the first design osseotomy site on workpiece of carbide key way mill, it is desirable that the positioning surface
For not less than hard alloy microbit drilling head diameter 2/3 facet, with ensure hard alloy microbit pull out of hole
Shi Kongwei does not shift；
Measure 3. is using corresponding to the hard alloy microbit formed a groove, the processing diameter of the hard alloy microbit
It is identical as the processing diameter of carbide key way mill, and the clamping shank of hard alloy microbit is rigidity preferably and accommodates
Convenient conical surface staight shank structure, the whole rotating accuracy error of hard alloy microbit is about 0.006mm；
By hard alloy microbit using clamping precision and reliability it is high and with outstanding dynamic balance performance heat-shrinkable knife handle
For clamping on the main shaft of lathe, the clamping rotating accuracy error of the heat-shrinkable knife handle is about 0.003mm；
Using the high speed of five-axle linkage high-speed machining center, underloading processing characteristic, using hard alloy microbit again in workpiece
Positioning surface on to peck at a high speed to bore processing method and process meet the pass of design requirement, it is desirable that pecking the process for boring processing at a high speed
In be equipped with high-pressure coolant, with realize it is good heat dissipation and chip removal effect；
It is as follows that above-mentioned high speed pecks the machined parameters for boring and processing:
Cutting speed is about 22.76m/min；
Pecking drilling depth every time is about 0.04mm；
Feed engagement is about 2.7 μm；
The speed of rollback to security plane is about 4000mm/min；
The speed for being back to previous processing plane is about 4000mm/min；
Time out is about 2 seconds.
The above various embodiments is only to illustrate the present invention, rather than its limitations.Although referring to the various embodiments described above to this hair
It is bright to be described in detail, those skilled in the art should understand that: it still can be in the various embodiments described above
Specific technical solution is modified or equivalent replacement of some of the technical features；And these are modified or replaceed, and
The essence of corresponding technical solution is not set to be detached from the spirit and scope of the present invention.
Claims (10)
1. the small hole processing method on a kind of phosphorus content≤0.6% steel, the small hole processing method is with phosphorus content
≤ 0.6% steel institute's shaping workpiece is as processed object, which is characterized in that the work that the small hole processing method is taken
Skill measure is:
Using five-axle linkage high-speed machining center as machining tool；
Positioning surface is milled out using the surface of the first design osseotomy site on workpiece of carbide key way mill；
Hard alloy microbit is used to meet design requirement to peck to process in a manner of brill at a high speed on the positioning surface of workpiece again
Pass, the high speed, which pecks to bore in process, is equipped with high-pressure coolant.
2. the small hole processing method on phosphorus content≤0.6% steel according to claim 1, which is characterized in that described hard
Matter alloy cotter mill cutter or the hard alloy microbit use heat-shrinkable knife handle clamping in the five-axle linkage High-speed machining
On the main shaft of the heart.
3. the small hole processing method on phosphorus content≤0.6% steel according to claim 2, which is characterized in that the heat
Clamping rotating accuracy error≤0.003mm of contracting knife handle.
4. the small hole processing method on phosphorus content according to claim 1 or claim 2≤0.6% steel, which is characterized in that institute
State the whole rotating accuracy error < 0.01mm of hard alloy microbit.
5. the small hole processing method on phosphorus content according to claim 1 or claim 2≤0.6% steel, which is characterized in that institute
It is identical with the processing diameter of the hard alloy microbit to state carbide key way mill, the carbide key way mill
And/or the clamping shank of the hard alloy microbit is conical surface staight shank structure.
6. the small hole processing method on phosphorus content≤0.6% steel according to claim 1, which is characterized in that described five
Axis links high-speed machining center with following running parameter:
Main shaft energy long-term stable operation is in 15000~35000r/min；
Radial and axial runout error≤the 0.002mm of main shaft；
Each axis position error≤0.005mm；
Coolant pressure >=60kg of cooling system.
7. the small hole processing method on phosphorus content≤0.6% steel according to claim 1, which is characterized in that described hard
Matter alloy cotter mill cutter is in the drilling head diameter 2/3 that the positioning surface that workpiece surface mills out is not less than hard alloy microbit
Facet.
8. the small hole processing method on phosphorus content≤0.6% steel according to claim 1, which is characterized in that the height
It is as follows that speed pecks the machined parameters for boring and processing:
Cutting speed is 18.85~23.56m/min；
Pecking drilling depth every time is 0.03~0.05mm；
Feed engagement is 2.5~3 μm；
Retracting to the speed of security plane is 3000~5000mm/min；
The speed for being back to previous processing plane is 3000~5000mm/min；
Time out is 2~3 seconds.
9. the small hole processing method on phosphorus content≤0.6% steel according to claim 1, which is characterized in that the work
Part is stainless steel work-piece, medium carbon steel workpiece or low-carbon steel workpiece.
10. the small hole processing method on phosphorus content≤0.6% steel according to claim 1, which is characterized in that described
Diameter≤0.3mm of pass；The hole depth of the pass meets following relational expression:
5≤L/D≤30；
In formula, L is the depth of pass；
D is the diameter of pass.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008101A (en) * | 2020-07-16 | 2020-12-01 | 上海航天精密机械研究所 | Drilling method for ultra-deep long hole |
| CN114211205A (en) * | 2021-12-22 | 2022-03-22 | 东方电气（武汉）核设备有限公司 | Integral manufacturing process of double-hole tube of control rod guide cylinder |
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| CN108274202A (en) * | 2018-02-11 | 2018-07-13 | 苏州市意可机电有限公司 | A kind of processing technology of deep hole thin-wall part |
| CN109396475A (en) * | 2017-08-17 | 2019-03-01 | 中北大学 | The processing method in hole on fuel injection pump roller body and other cylindrical structures |
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| CN201776646U (en) * | 2010-07-28 | 2011-03-30 | 哈尔滨理工大学 | High-precision and low-cost heat-shrinkable knife handle |
| CN104551091B (en) * | 2014-12-15 | 2017-05-17 | 贵州黎阳航空动力有限公司 | Method for machining small deep hole of part by using peck type variable speed drilling |
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| CN112008101A (en) * | 2020-07-16 | 2020-12-01 | 上海航天精密机械研究所 | Drilling method for ultra-deep long hole |
| CN114211205A (en) * | 2021-12-22 | 2022-03-22 | 东方电气（武汉）核设备有限公司 | Integral manufacturing process of double-hole tube of control rod guide cylinder |
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Application publication date: 20190830 |